Costco · Thornton, CO

Costco Thornton

16375 WASHINGTON STREET

Thornton, CO 80023

Address

16375 Washington Street, Thornton, CO 80023

Phone

+1 303-474-3247

Opening hours

Hours may differ on public holidays.

Website

costco.com/warehouse-locations/thornton-co-629.html

Coordinates

39.991636, -104.983577

This listing is based on OpenStreetMap data (updated 2026-10-06). Something wrong? Fix it on OpenStreetMap or let us know.

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Where is Costco Thornton?

Costco Thornton is located at 16375 Washington Street, Thornton, CO 80023. Use “Get directions” to start a route from where you are.

What is the phone number of Costco Thornton?

The listed phone number is +1 303-474-3247.

What are the opening hours of Costco Thornton?

Recorded opening hours: Monday – Friday 10 AM–8:30 PM; Saturday 9:30 AM–6 PM; Sunday 10 AM–6 PM. Hours may differ on holidays.